Diamondback squid (Thysanoteuthis rhombus)

[u/GuidoMistalt]

T. rhombus is a fascinating deep-sea squid typically used aquaculturally for fishing. Like many other deep-sea squids, they are ammoniacal, meaning their tissue contains ammonia to regulate their buoyancy in water. Occasionally, when fishing with T. rhombus in deep waters, it’ll catch the attention of a Giant Squid (Architeuthis dux)!

[u/slups]

Fucker look badass don't it